I have ridden many trips at night in winter when the daylight hours all happen while I'm at work. Key things are reflective surface in all directions; mirror to see behind you; lights to be seen; and lights to see. Those are the "things" then there's the most important safety element...your head. Scan your route, make sure there are no places where things can surprise you by jumping out at you (this means people or animals). As mentioned, check out the road surfaces, and scope out alternate routes at the same time. For lights, I really like my dyno, but before I had it, I used Dinotte AA lights front and back and their commuter version on my helmet. Now I have a dyno light on the back, and I use the Dinotte 140 AA rear-facing light. My jacket has about a 2" stripe of reflective material across the back, I use reflective tape and tires with reflective sidewall, and pedal reflectors. Honestly, I feel like I get more respect on the road at night than I do during daylight. Most important thing for you to do at night is to maintain your awareness. Do that and the differences from daytime riding really aren't that significant IMO.